Table 1—

Patient demographics

Total populationNPWT subjectsControl subjects
n1537380
Age (years)58.7 ± 12.856.8 ± 13.460.4 ± 12.2
Sex (male)126 (82)63 (86)63 (79)
Ethnic origin
    Non-hispanic white72 (47)34 (46)38 (48)
    African American26 (17)10 (14)16 (20)
    Mexican American51 (33)27 (37)24 (30)
    Native American4 (3)2 (3)2 (2)
BMI (kg/m2)31.0 ± 8.431.0 ± 7.930.9 ± 8.9
Baseline wound area (cm2)20.0 ± 20.021.6 ± 22.618.5 ± 17.4
Wound duration (months)1.6 ± 5.21.2 ± 4.01.8 ± 6.0
Currently use alcohol38 (25)20 (27)18 (23)
Currently use tobacco14 (9)4 (5)10 (13)
Type 2 diabetes139 (91)65 (89)74 (93)
  • Data are means ± SD or n (%).